Collect. Czech. Chem. Commun. 1993, 58, 2505-2516
https://doi.org/10.1135/cccc19932505

Oxidation of 3β,28-Diacetoxy-18-lupen-21-one with Peroxy Acids: A Way to Des-E-lupane Derivatives

Eva Klinotováa, Martin Rejzeka, Hana Zůnováa, Jan Sejbala, Jiří Klinota and Jiří Urbanb

a Department of Organic Chemistry, Charles University, 128 40 Prague 2, Czech Republic
b J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 182 23 Prague 8, Czech Republic

Individual author index pages


Other CCCC articles of these authors

  • Martin Dračínský, Simona Hybelbauerová, Jan Sejbal and Miloš Buděšínský*
    Preparation and Conformational Study of B-Ring Substituted Lupane Derivatives
    2006, Vol. 71, Issue 8, pp. 1131–1160 [Abstract]
  • Jiří Zedník*, Jan Sejbal, Jan Svoboda, Jan Sedláček and Jiří Vohlídal
    Structure Dynamics and Isomerism of Bis[μ-(2-methylphenolato)]bis[(η2:η2-cycloocta-1,5-diene)rhodium(I)] Complex
    2006, Vol. 71, Issue 3, pp. 423–433 [Abstract]
  • Martin Dračínský, Václav Richtr, Václav Křeček, Jan Sejbal, Jiří Klinot and Miloš Buděšínský*
    Preparation and Conformational Study of 19β,28-Epoxy-18α-olean-5-ene Derivatives
    2006, Vol. 71, Issue 3, pp. 387–410 [Abstract]
  • Iva Tišlerová*, Václav Richtr and Jiří Klinot
    Conformation Study of A-Ring in 19β,28-Epoxy-2-fluoro-18α-oleananes
    2006, Vol. 71, Issue 3, pp. 368–386 [Abstract]
  • Irena Němcová*, Karel Nesměrák, Božena Kafková and Jan Sejbal
    Physicochemical Properties of 9-(Alkylsulfanyl)- and 9-(Arylsulfanyl)acridine Derivatives and Their Interaction with (2-Hydroxypropyl)cyclodextrins
    2006, Vol. 71, Issue 2, pp. 179–189 [Abstract]
  • Miroslav Kvasnica, Iva Tišlerová, Jan Šarek*, Jan Sejbal and Ivana Císařová
    Preparation of New Oxidized 18-α-Oleanane Derivatives
    2005, Vol. 70, Issue 9, pp. 1447–1464 [Abstract]
  • Iva Tišlerová*, Eva Klinotová, Jiří Klinot, Jan Sejbal, Martin Rejzek and Stanislav Hilgard
    Preparation of E-Secolupane Acids and Lactones
    2003, Vol. 68, Issue 4, pp. 751–778 [Abstract]
  • Jan Sejbal*, Martina Homolová, Iva Tišlerová and Václav Křeček
    Preparation and Conformational Analysis of 1,2-Seco Derivatives of 19β,28-Epoxy-18α-oleanane
    2000, Vol. 65, Issue 8, pp. 1339–1356 [Abstract]
  • Eva Klinotová*, Jitka Čermáková, Martin Rejzek, Václav Křeček, Jan Sejbal, Petr Olšovský and Jiří Klinot
    Reaction of 18β,19β-Epoxylupan-21-one Derivatives with Acids: A Way to 21,22-Disubstituted Lup-18-ene Triterpenoids
    1999, Vol. 64, Issue 2, pp. 329–347 [Abstract]
  • Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
    Functionalization of Lupane-3β,28-diyl Diacetate with Chromium(VI) Oxide. Part 2
    1997, Vol. 62, Issue 12, pp. 1905–1918 [Abstract]
  • Eva Klinotová, Václav Křeček, Jiří Klinot, Magdalena Endová, Jana Eisenreichová, Miloš Buděšínský and Martin Štícha
    Glycosylation of Triterpene Alcohols and Acids of the Lupane and A-Secolupane Series
    1997, Vol. 62, Issue 11, pp. 1776–1798 [Abstract]
  • Jiří Protiva, Thi Thu Huong Nguyen, Jiří Urban and Eva Klinotová
    Reactions of 21-Acetoxy-16α,17α-epoxypregn-4-ene-3,20-dione with Nitrogen-Containing Nucleophilic Agents
    1997, Vol. 62, Issue 7, pp. 1095–1104 [Abstract]
  • Miroslav Kuchař, Marie Poppová, Antonín Jandera, Vladimíra Panajotovová, Hana Zůnová, Miloš Buděšínský, Hana Tomková, Alexandr Jegorov and Jan Taimr
    Chiral Forms of 4-(2',4'-Difluorobiphenyl-4-yl)-2-methyl-4-oxobutanoic Acid (Flobufen) and Its Metabolite.Synthesis and Basic Biological Properties
    1997, Vol. 62, Issue 3, pp. 498–509 [Abstract]
  • Thi Thu Huong Nguyen, Jiří Protiva, Eva Klinotová, Jiří Urban and Miroslav Protiva
    Synthesis of 24-(Piperidin-1-yl, Morpholin-4-yl and 4-Methylpiperazin-1-yl)-5β-cholan-3α-ols and Four Hydroxylated 23-(4,5-Dihydroimidazol-2-yl)-24-nor-5β-cholanes
    1997, Vol. 62, Issue 3, pp. 471–478 [Abstract]
  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
    Functionalization of Lupane with Chromium(VI) Oxide. A Remark on the Structure of Clerodone
    1996, Vol. 61, Issue 9, pp. 1371–1379 [Abstract]
  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
    Oleanane Triterpenoids Functionalized at C-25 and C-26
    1996, Vol. 61, Issue 9, pp. 1360–1370 [Abstract]
  • Tomáš Elbert, Martin Rejzek and Henri Virelizier
    Regioselective Tritiation of Carbamate Dicyclic Juvenoids
    1996, Vol. 61, Issue 6, pp. 946–950 [Abstract]
  • Martin Rejzek, Marie Zarevúcka, Zdeněk Wimmer, Tomáš Vaněk, Richard Tykva, Jelena Kuldová, David Šaman and Blanka Bennettová
    Synthesis of Juvenile Hormone Bioanalogs Derived from 2-(4-Hydroxybenzyl)-6-methylcyclohexanone
    1996, Vol. 61, Issue 4, pp. 605–614 [Abstract]
  • Thi Thu Huong Nguyen, Jiří Urban, Eva Klinotová, Jan Sejbal, Jiří Protiva, Pavel Drašar and Miroslav Protiva
    Synthesis of Several Hydroxylated 23-(Benzimidazol-2-yl-, Benzoxazol-2-yl and Benzothiazol-2-yl)norcholanes and Some Related Compounds
    1995, Vol. 60, Issue 2, pp. 257–275 [Abstract]
  • Miroslav Kuchař, Marie Poppová, Hana Zůnová, Eva Knězová, Václav Vosátka and Marek Příhoda
    4-(2',4'-Difluorobiphenyl-4-yl)-2-methyl-4-oxobutanoic Acid and Its Derivatives
    1994, Vol. 59, Issue 12, pp. 2705–2713 [Abstract]
  • Jiří Urban and Jiří Volke
    1,2,4,6-Substituted Pyridinium Derivatives-Synthesis and Properties
    1994, Vol. 59, Issue 11, pp. 2545–2561 [Abstract]
  • Magdalena Endová, Eva Klinotová, Jan Sejbal, Bohumil Máca, Jiří Klinot and Jiří Protiva
    Preparation of 2,3-Secodiacids of the Lupane Series
    1994, Vol. 59, Issue 6, pp. 1420–1429 [Abstract]
  • Vladimír Valenta, Jiří Urban, Jan Taimr and Zdeněk Polívka
    Potential Nootropic Agents: Synthesis of Some 1,4-Disubstituted 2-Oxopyrrolidines and Some Related Compounds
    1994, Vol. 59, Issue 5, pp. 1126–1136 [Abstract]
  • Karel Šindelář, Alexandra Šilhánková, Jiří Urban, Jan Metyš, Martin Valchář and Zdeněk Polívka
    Antihistamine Substances. Tricyclic Analogues of N-(4,4-Diphenyl-3-butene-1-yl)nipecotic Acid and Some Related Compounds
    1994, Vol. 59, Issue 3, pp. 667–674 [Abstract]
  • Jiří Novotný, Jaroslav Podlaha and Jiří Klinot
    Crystal Structure and Conformation of Ring A of 2β-Bromo-19β,28-epoxy-18α-oleanan-3-one
    1993, Vol. 58, Issue 11, pp. 2737–2744 [Abstract]
  • Jiří Protiva, Václav Křeček, Luděk Vlk, Hana Malinová, Eva Klinotová, Bohumil Máca and Jiří Urban
    Indirect Iodination of Estrogenes via Triazenes
    1993, Vol. 58, Issue 11, pp. 2729–2736 [Abstract]
  • Eva Klinotová, Jiří Klinot, Václav Křeček, Stanislav Hilgard, Miloš Buděšínský and Jan Malát
    Structure of Dimeric Compounds Obtained from 3β-Acetoxy-21,22-dioxo-18α,19βH-ursan-28,20β-olide
    1993, Vol. 58, Issue 7, pp. 1675–1691 [Abstract]
  • Eva Klinotová, Jiří Klinot, Václav Křeček, Miloš Buděšínský and Bohumil Máca
    21,22-Disubstituted 18α,19βH-Ursane Derivatives with Oxabicyclooctane System in Ring E
    1993, Vol. 58, Issue 1, pp. 173–190 [Abstract]
  • Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
    Functionalization of 3β,28-lupanediol diacetate with chromium(VI) oxide
    1991, Vol. 56, Issue 12, pp. 2936–2949 [Abstract]
  • Eva Klinotová, Václav Křeček, Jiří Klinot, Miloš Buděšínský, Jaroslav Podlaha, Jana Podlahová and Jiří Ječný
    An unusual reaction of a bridged triterpenoid α-diketone with acetic anhydride
    1991, Vol. 56, Issue 12, pp. 2917–2935 [Abstract]
  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
    Photolyses and pyrolyses of triterpenoid nitrites
    1991, Vol. 56, Issue 8, pp. 1732–1743 [Abstract]
  • Jiří Klinot, Stanislav Hilgard, Jakub Krijt and Petr Olšovský
    Infrared spectra of 2α-substituted 3-oxotriterpenoids and conformation of ring A
    1991, Vol. 56, Issue 5, pp. 966–972 [Abstract]
  • Jiří Protiva, Jaroslav Pecka, Jiří Urban and Jiří Zima
    Synthesis of 20-iodoeicosanoic and 20-[125I]-iodoeicosanoic acids
    1990, Vol. 55, Issue 6, pp. 1546–1554 [Abstract]
  • Jiří Urban, Zdeněk Šedivý, Jiří Holubek, Emil Svátek, Miroslav Ryska, Ivan Koruna, Antonín Dlabač, Martin Valchář, Jiřina Metyšová, Zdeněk Polívka, Karel Šindelář, Josef Pomykáček, Marta Hrubantová and Miroslav Protiva
    Potential antidepressants: 1-(2-(Methoxy- and hydroxyphenylthio)phenyl)-2-propylamines
    1990, Vol. 55, Issue 4, pp. 1077–1098 [Abstract]
  • Jiří Klinot, Miloš Buděšínský and Jarmil Světlý
    Conformation of ring A in triterpenoid and 4,4-dimethylsteroid 3-ketones. Chemical shifts of methyl protons and lanthanide and benzene induced shifts
    1990, Vol. 55, Issue 3, pp. 766–781 [Abstract]
  • Jiří Jílek, Jiří Urban, Vojtěch Kmoníček, Josef Pomykáček, Jiří Holubek, Emil Svátek, Oluše Matoušová, Jan Metyš, Martin Valchář, Stanislav Wildt and Miroslav Protiva
    Potential anticonvulsants: 3-Chlorobenzophenone derivatives
    1989, Vol. 54, Issue 8, pp. 2248–2260 [Abstract]
  • Jiří Jílek, Jiří Urban, Petr Taufmann, Jiří Holubek, Antonín Dlabač, Martin Valchář and Miroslav Protiva
    Potential antidepressants: 2-(Phenylthio)aralkylamines
    1989, Vol. 54, Issue 7, pp. 1995–2008 [Abstract]
  • Miloš Buděšínský and Jiří Klinot
    Conformation of ring A in triterpenoid ketones. Carbon-13 chemical shifts and spin-lattice relaxation times of lupane and 18α-oleanane derivatives
    1989, Vol. 54, Issue 7, pp. 1928–1939 [Abstract]
  • Jan Sejbal, Eva Klinotová, Markéta Bludská, Jiří Klinot and Miloš Buděšínský
    Conversion of betulin into careyagenolide (2α,3β-dihydroxy-18α,19βH-ursan-28,20β-olide)
    1989, Vol. 54, Issue 4, pp. 1036–1042 [Abstract]
  • Jiří Protiva, Václav Křeček, Bohumil Máca, Jiří Urban, Miloš Buděšínský and Miloš Procházka
    Synthesis of 4-(N-acetyl-L-tyrosyl)amino-2-iodobenzoic acid
    1989, Vol. 54, Issue 4, pp. 1012–1018 [Abstract]
  • Jiří Klinot, Jaroslav Podlaha, Jana Podlahová, Stanislav Hilgard and Eva Klinotová
    Conformation of ring A of 19β,28-epoxy-18α-oleanan-3-one in solution and in the solid state. Crystal structure and carbon-deuterium stretching frequencies
    1989, Vol. 54, Issue 3, pp. 737–750 [Abstract]
  • Jiří Klinot, Jaroslav Podlaha, Jana Podlahová, Karel Malý and Václav Petříček
    Conformation of ring A in 3-oxotriterpenoids. sofa conformation in 3-oxolupane-28-nitrile crystal
    1989, Vol. 54, Issue 3, pp. 725–736 [Abstract]
  • Jiří Klinot, Jiří Liška, Alena Forgáčová, Miloš Buděšínský, Jiří Protiva, Stanislav Hilgard and Alois Vystrčil
    Acid-catalyzed rearrangements of an A(1)-nor-triterpenoid 2α,3α-epoxide
    1989, Vol. 54, Issue 2, pp. 413–429 [Abstract]
  • Jiří Klinot, Jan Sejbal and Alois Vystrčil
    Triterpenoid 2,3-ketols, diols and their acetates: Preparation and conformation of the ring A
    1989, Vol. 54, Issue 2, pp. 400–412 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
    Photolysis of 19β,28-epoxy-18α-oleanan-2β-ol nitrites: Functionalization of 10β- and 8β-methyl groups
    1988, Vol. 53, Issue 1, pp. 118–131 [Abstract]
  • Eva Klinotová, Helena Pavlíková, Martina Pressová, Hana Chodounská, Jiří Klinot, Jiří Protiva and Alois Vystrčil
    E-seco-Acids of pentacyclic triterpenoids. Oxidative cleavage of ring E in 3β-acetoxy-21-oxo-18α,19βH-ursan-28→20β-olide
    1987, Vol. 52, Issue 11, pp. 2744–2752 [Abstract]
  • Jiří Urban, Emil Svátek, Miroslav Ryska, Jan Metyš, Stanislav Wildt and Miroslav Protiva
    4-Aryl-3-(dimethylaminomethyl)thiacyclohexan-4-ols including the thia analogue of tramadol; Synthesis and analgetic activity
    1987, Vol. 52, Issue 5, pp. 1340–1351 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
    Reaction of 3-keto and 2-ketotriterpenoids with 3-chloroperoxybenzoic acid in aliphatic alcohols. A new method of preparation of α-hydroxy ketones
    1987, Vol. 52, Issue 4, pp. 1052–1061 [Abstract]
  • Jiří Protiva, Rudolf Očadlík, Eva Klinotová, Jiří Klinot and Alois Vystrčil
    Ethylene dithioketals in ring a of 19β,28-epoxy-18α-oleanane; Mass spectra and reduction with deuterated Raney-nickel
    1987, Vol. 52, Issue 2, pp. 501–507 [Abstract]
  • Jiří Klinot, Jiří Rozen, Eva Klinotová and Alois Vystrčil
    A-nor-derivatives of 19β,28-epoxy-18α-oleanane: Preparation and stereochemistry
    1987, Vol. 52, Issue 2, pp. 493–500 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
    Oxidation of 3β,28-lupanediol diacetate and lupane with peroxyacetic acid
    1987, Vol. 52, Issue 2, pp. 487–492 [Abstract]
  • Jiří Klinot, Jarmil Světlý, Eva Klinotová, Miloš Buděšínský and Alois Vystrčil
    Preparation of isomeric 2-methyl-1-oxotriterpenoids of the 18α-oleanane series; Conformation of ring A
    1986, Vol. 51, Issue 12, pp. 2869–2878 [Abstract]
  • Jiří Protiva, Eva Klinotová, Jiří Klinot, Miroslav Kušiak and Alois Vystrčil
    Reduction of triterpenoid ketones by chloroiridic acid and trimethyl phosphite
    1986, Vol. 51, Issue 9, pp. 2029–2033 [Abstract]
  • Jiří Klinot, Milan Jirsa, Eva Klinotová, Karel Ubik and Jiří Protiva
    Isolation of (23R) 3α, 7α,23-trihydroxy-5β-cholan-24-oic (β-phocaecholic) acid from duck bile. 1H NMR spectra of its derivatives
    1986, Vol. 51, Issue 8, pp. 1722–1730 [Abstract]
  • Jiří Protiva, Jaroslav Pecka, Eva Klinotová and Miloš Procházka
    Synthesis of 16-(4-iodophenyl)hexadecanoic acid
    1986, Vol. 51, Issue 4, pp. 872–878 [Abstract]
  • Václav Křeček, Jiří Protiva, Miloš Buděšínský, Eva Klinotová and Alois Vystrčil
    Preparation of C(18)-empiric 20,29,30-trinorlupane derivatives. 1H, 13C NMR and mass spectra
    1986, Vol. 51, Issue 3, pp. 621–635 [Abstract]
  • Jiří Klinot, Václav Všetečka, Eva Klinotová and Alois Vystrčil
    Conformation of ring A in 3-oxotriterpenoids. Dipole moments and CD spectra
    1986, Vol. 51, Issue 3, pp. 611–620 [Abstract]
  • Jiří Klinot, Miloš Buděšínský, Eva Klinotová and Alois Vystrčil
    Conformation of the A ring in 1-oxo and 3-oxotriterpenoids. Vicinal interproton coupling constants
    1986, Vol. 51, Issue 3, pp. 593–610 [Abstract]
  • Jan Sejbal, Jiří Klinot, Jiří Protiva and Alois Vystrčil
    Reactions of triterpenoid ketones with sulfur and morpholine under the conditions of Willgerodt-Kindler reaction
    1986, Vol. 51, Issue 1, pp. 118–127 [Abstract]
  • Jiří Klinot, Jarmil Světlý, Eva Klinotová and Alois Vystrčil
    Preparation of isomeric 2-methyl-3-oxolupane-28-nitriles
    1985, Vol. 50, Issue 12, pp. 2918–2924 [Abstract]
  • Jan Sejbal, Jiří Klinot, Daniela Hrnčířová and Alois Vystrčil
    Oxidation of 19β,28-epoxy-18α-oleanan-3-one and -1-one with peracids
    1985, Vol. 50, Issue 12, pp. 2753–2759 [Abstract]
  • Jiří Urban, Antonín Dlabač, Martin Valchář and Miroslav Protiva
    Potential noncataleptic neuroleptic agents: 2,3-Dichloro-10-[4-(2-hydroxyethyl)piperazino]-10,11-dihydrobenzo[b,f]thiepin
    1984, Vol. 49, Issue 4, pp. 992–1001 [Abstract]
  • Eva Klinotová, Jiří Protiva, Jiří Klinot and Alois Vystrčil
    Reaction of 30-nor-18-lupene derivatives with bromine and peracids
    1984, Vol. 49, Issue 1, pp. 141–149 [Abstract]
  • Eva Klinotová, Jiří Klinot, Jiří Protiva, Jiří Urban and Alois Vystrčil
    Reaction of 30-nor-19(20)-lupene derivatives with bromine
    1983, Vol. 48, Issue 12, pp. 3444–3454 [Abstract]
  • Karel Šindelář, Jiří Holubek, Miroslav Ryska, Emil Svátek, Jiří Urban and Miroslav Protiva
    11-(Dimethylaminoalkyl)-6,11-dihydrodibenzo[b,e]thiepin-11-carbonitriles and some related compounds
    1983, Vol. 48, Issue 7, pp. 1898–1909 [Abstract]
  • Ján Galoci, Miloš Procházka and Eva Klinotová
    Pyrolysis of 2-acetoxycarboxylic acids
    1983, Vol. 48, Issue 6, pp. 1729–1733 [Abstract]
  • Karel Šindelář, Jiří Holubek, Miroslav Ryska, Emil Svátek, Jiří Urban, Jaroslava Grimová, Irena Červená, Marta Hrubantová and Miroslav Protiva
    Dibenzo[b,f]thiepin-10-carbonitrile, its 10,11-dihydro derivative, some transformation products and related compounds
    1983, Vol. 48, Issue 4, pp. 1187–1211 [Abstract]
  • Jiří Protiva, Václav Křeček, Josefa Křečková, Eva Klinotová and Alois Vystrčil
    The synthesis and the mass spectra of 28,29,30-trinoroleanane derivatives with a double bond in the ring E or D
    1983, Vol. 48, Issue 3, pp. 928–936 [Abstract]
  • Irena Valterová, Jiří Klinot and Alois Vystrčil
    Preparation and antibacterial activity of di-, tri- and tetraoic acids derived from 3,4-secolupane
    1983, Vol. 48, Issue 2, pp. 649–661 [Abstract]
  • Jiří Tax, Petr Sedmera, Jindřich Vokoun, Jiří Urban, Jaroslava Karnetová, Karel Stajner, Zdenko Vaněk and Vladimír Krumphanzl
    Phenazines from Streptomyces cinnamonensis
    1983, Vol. 48, Issue 2, pp. 527–532 [Abstract]
  • Miroslav Protiva, Karel Šindelář, Vladimír Valenta, Jiří Holubek, Emil Svátek, Miroslav Ryska, Jiří Schlanger, Jiří Urban and Marta Hrubantová
    Reactions of 11-chloro-11-phenyl-6,11-dihydrodibenzo[b,e]-thiepin with piperidine and some further nucleophiles
    1982, Vol. 47, Issue 11, pp. 3094–3113 [Abstract]
  • Jiří Protiva, Luděk Lepša, Eva Klinotová, Jiří Klinot, Václav Křeček and Alois Vystrčil
    Homogeneous hydrogenation and deuteration of pentacyclic triterpenoids: Double bonds in side-chains
    1981, Vol. 46, Issue 11, pp. 2734–2741 [Abstract]
  • Jiří Protiva, Eva Klinotová, Hana Skorkovská and Alois Vystrčil
    Mass spectra of 18α,19βH-ursane derivatives with a lactone arrangement of the ring E
    1981, Vol. 46, Issue 4, pp. 1023–1030 [Abstract]
  • Jiří Urban, Miroslav Marek, Jiří Jarý and Petr Sedmera
    13C NMR study of tetrosides and their derivatives
    1980, Vol. 45, Issue 10, pp. 2779–2783 [Abstract]
  • Jiří Protiva, Hana Skorkovská, Jiří Urban and Alois Vystrčil
    Triterpenes and steroids from ganoderma applanatum
    1980, Vol. 45, Issue 10, pp. 2710–2713 [Abstract]
  • Eva Klinotová, Hana Skorkovská, Jiří Protiva, Jiří Urban and Alois Vystrčil
    Isomerization of ketolactone of oxabicyclo[2.2.2]octane pattern in the E ring of ursane derivatives
    1980, Vol. 45, Issue 8, pp. 2351–2359 [Abstract]
  • Irena Valterová, Jiří Klinot and Alois Vystrčil
    3,4-Seco-3,28-lupanedioic acids substituted in the side chain at C(5)
    1980, Vol. 45, Issue 7, pp. 1964–1973 [Abstract]
  • Eva Klinotová, Hana Skorkovská, Jiří Protiva and Alois Vystrčil
    Structure and the properties of 18α,19βH-ursane derivatives with a lactone bridge to ring E
    1980, Vol. 45, Issue 5, pp. 1366–1378 [Abstract]
  • Jiří Klinot, Jarmil Světlý, Dagmar Kudláčková, Miloš Buděšínský and Alois Vystrčil
    Preparation of 2-methyl-3-oxo triterpenoids of 18α-oleanane series and the conformation of ring A
    1979, Vol. 44, Issue 1, pp. 211–225 [Abstract]
  • Eva Klinotová, Stanislav Bosák and Alois Vystrčil
    The preparation of 19αH-lupeol acetate and its derivatives
    1978, Vol. 43, Issue 8, pp. 2204–2216 [Abstract]